fill
The GridBagConstraints fill field determines whether and how a component
is resized if the component's display area is larger than the component itself. The mnemonic constants you use to set this variable are
GridBagConstraints.NONE: Don't resize the component
GridBagConstraints.HORIZONTAL: Make the component wide enough to fill the display area, but don't change its height.
GridBagConstraints.VERTICAL: Make the component
tall enough to fill its display area, but don't change its width.
GridBagConstraints.BOTH: Resize the component enough to
completely fill its display area both vertically and horizontally.
For the display area of the calculator screen use
displayConstraints.fill = GridBagConstraints.HORIZONTAL;
because you'd like the screen to show as many digits as it can.
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Last Modified June 30, 1998
Copyright 1997, 1998 Elliotte Rusty Harold
elharo@metalab.unc.edu